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Land cover

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Land Cover
land cover - [geography] The classification of land according to the vegetation or material that covers most of its surface; for example, pine forest, grassland, ice, water, or sand. [Category=Geospatial ] ...

The materials covering a land surface, such as vegetation, exposed soils, and so forth.

Land cover, land use, and vegetation mapping data are essential elements in a wide array of government and private sector activities, including inventory, management, monitoring, and modeling.

- Anything that exists on, and is visible from above, the earth's surface. Examples include vegetation, exposed or barren land, water, snow, and ice.

Land Cover: The materials that cover a study site, such as vegetation, bare soil, rock, sand, and water.
Legend: The part of the drawn map explaining the meaning of the symbols used to code the depicted geographical elements.

Landlocked developing countries
Landscape connectivity
Linear Reference System
List of environment topics
List of non-fictional lost worlds ...

Land cover classification from remotely sensed imagery that requires minimal operator input is referred to as unsupervised classification.

Global Facility
The best source of free satellite imagery on the web, and one of the best websites anywhere specializing in near global Landsat TM, Landsat ETM, MODIS and other coverage.

Global Land Cover Facility
Global Land Data Assimilation System (NASA) ...

area of ed by shallow water or saturated by water.
Encyclopedic Entry: wetland
ZIP code ...

Fig. 4. -- Land cover as represented in a simple raster system. Cells with a "1" are forests, cells with a "2" are croplands, and cells with a "3" are rangelands.

The Global Facility is a research and information center located at the University of Maryland Institute for Advanced Computer Studies.

An example would be land cover classification. [LINK] Raster data files can be manipulated quickly by the computer, but they are often less detailed an may be less visually appealing than vector data files, ...

155 Geographic Information Retrieval and Analysis System, a project conducted by US Geological Survey in the 1970s; produced vector interpretations of land use/ stored in an early topological data structure. GPS p.

The clusters or spectral classes result can be related to land cover types on the ground.

For example, reasoning that a type classified as Deciduous Needleleaf Trees in one dataset is a specialization of type Forest in another more roughly-classified dataset can help a GIS automatically merge the two datasets under ...

Create an Image Map to Represent your Proposed Land Cover
Othophotos are great, but they seldom represent the landscape with our proposed interventions. Where do we get an aerial image that represents what is in our imagination?

University of Maryland Global Facility for free viewing/download of individual Landsat images, GeoCover mosaics, and other earth imagery data ...

GIRAS files contain land use/land cover information for areas in the United States, including attributes for land use, land cover, political units, hydrologic units, census and county subdivisions, federal landownership and state landownership.

The following GIS application illustrates the land use and changes over time in the Kathmandu Valley (figure 7.8). The analysis is done by overlaying land use/cover data of different dates as discussed above.

The same basic technique could be used, for example, to characterize land use or land cover types.

Grids that classify land use or exemplify this category. Other examples are proximity grids (values identify the nearest object) and feature grids (only two values are possible: one value for cells where features occur, ...

land-use, land cover, population density, etc.). These maps have the property that each point on the map belongs to one of its polygons representing its features.

The peaks poke-up and the valleys dip down with a realistic wrapper. This three-dimensional rendering of geography is a far cry from the traditional flat map with pastel colors imparting an abstract impression of the area.

A vector base map for use in XMap that displays roads and streets; back-country trails; land cover shading; cities, towns and locales; and geographic features.

there may be many layers in a database, e.g. soil type, elevation, land use,
vector model uses discrete line segments or points to identify locations ...

Islands might be useful for mapping land covers or habitats, such as where two groups of similar trees are separated by a grassy area or there is land mass surrounding a water body that has islands in it.

overlay that defines the surface of the earth in terms of vegetation type in non developed areas (i.e., forest, rowcrops, orchards, grasslands) and land use type in developed areas (residential, transportation, vacant, light industrial). ...

A coverage stores map data in the three basic forms of graphic elements, i.e. points, lines, polygons. (2) A single theme or layer of data (e.g. soils, land cover, roads, built-up areas) in a geographic database.

See also: See also: Cover, Information, GIS, Model, Geographic

GIS  Land Base  Land cover map

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